Surgical instrument

Abstract

A surgical instrument of the present invention comprises an insertion unit; an operating unit provided on one end of the insertion unit; a treatment unit provided so as to protrude from the other end of the insertion unit; a first shaft member for transmitting turning force to the treatment unit in conjunction with the turning operation of a turning operation member provided on the operating unit; and a second shaft member for transmitting opening/closing force to the treatment unit in conjunction with the opening/closing operation of an opening/closing member provided on the operating unit.

1. A surgical instrument comprising:
 an insertion unit; 
 an operating unit provided on one end of the insertion unit; 
 a treatment unit provided so as to protrude from the other end of the insertion unit; 
 a first shaft member for transmitting turning force to the treatment unit in conjunction with the turning operation of a turning operation member provided on the operating unit; 
 a second shaft member for transmitting opening/closing force to the treatment unit in conjunction with the opening/closing operation of an opening/closing member provided on the operating unit; and 
 a third shaft member for transmitting angle-variable force which changes the angle in the protruding direction of the treatment unit as to the axis of the insertion unit in conjunction with an angle-variable operation of a angle-variable operating unit provided on the operating unit; 
 wherein the first shaft member, the second shaft member, and the third shaft member are positioned on approximately the same axis, the first shaft member, second shaft member and third shaft member extend from a distal end of the insertion unit to the operating unit; 
 and wherein the treatment unit can turn about the axis in the protruding direction according to the turning operation with the turning operation member, and the treatment unit can move at least one of two gripping members, each having a gripping face according to the opening/closing operation with the opening/closing operation member, and so can be opened or closed, and the treatment unit can change the angle in the protruding direction according to the angle-variable operation with the angle-variable operating unit and wherein the first and third shaft members are each in a pipe shape, and the second shaft member is in a rod shape, wherein the second shaft member is inserted within the first shaft member, and the first shaft member is inserted within the third shaft member. 
 
     
     
       2. The surgical instrument of  claim 1 , wherein the first shaft member only transmits a turning force, the second shaft member only transmits an opening/closing force and the third shaft member only transmits an angle-variable force. 
     
     
       3. A surgical instrument comprising:
 an insertion unit; 
 an operating unit provided on one end of the insertion unit; 
 a treatment unit provided so as to protrude from the other end of the insertion unit; 
 a first shaft member for transmitting turning force to the treatment unit in conjunction with the turning operation of a turning operation member provided on the operating unit; 
 a second shaft member for transmitting opening/closing force to the treatment unit in conjunction with the opening/closing operation of an opening/closing member provided on the operating unit; and 
 a third shaft member for transmitting angle-variable force which changes the angle in the protruding direction of the treatment unit as to the axis of the insertion unit in conjunction with an angle-variable operation of a angle-variable operating unit provided on the operating unit; 
 wherein the first shaft member, the second shaft member, and the third shaft member are positioned on approximately the same axis, the first shaft member, second shaft member and third shaft member extend from a distal end of the insertion unit to the operating unit; 
 wherein the treatment unit can turn about the axis in the protruding direction according to the turning operation with the turning operation member, and the treatment unit can move at least one of two gripping members, each having a gripping face according to the opening/closing operation with the opening/closing operation member, and so can be opened or closed, and the treatment unit can change the angle in the protruding direction according to the angle-variable operation with the angle-variable operating unit, and 
 wherein the treatment unit further comprises two gripping members and a biasing member which biases at least one of the two gripping members in the direction which is constantly in contact with the other gripping member, and the one gripping member resists the biasing force of the biasing member by the opening operation of the opening/closing operation, and thus moves in the direction which separates it from the other gripping member. 
 
     
     
       4. The surgical instrument according to  claim 3 , wherein the first and third shaft members are each in a pipe shape, and the second shaft member is in a rod shape, wherein the second shaft member is inserted within the first shaft member, and the first shaft member is inserted within the third shaft member. 
     
     
       5. The surgical instrument according to  claim 4 , wherein the insertion unit has a fourth shaft member in a pipe shape, and the third shaft member is inserted within the fourth shaft member. 
     
     
       6. A surgical instrument comprising:
 an insertion unit; 
 an operating unit provided on one end of the insertion unit; 
 a treatment unit provided so as to protrude from the other end of the insertion unit; 
 first shaft means for transmitting turning force to the treatment unit in conjunction with the turning operation of a turning operation means provided on the operating unit; 
 second shaft means for transmitting opening/closing force to the treatment unit in conjunction with the opening/closing operation of opening/closing means provided on the operating unit; and 
 third shaft means for transmitting angle-variable force which changes the angle in the protruding direction of the treatment unit as to the axis of the insertion unit in conjunction with an angle-variable operation of a angle-variable operating means provided on the operating unit; 
 wherein the first shaft means, the second shaft means, and the third shaft means are positioned on approximately the same axis, the first shaft means, second shaft means and third shaft means extend from a distal end of the insertion unit to the operating unit; 
 and wherein the treatment unit can turn about the axis in the protruding direction according to the turning operation with the turning operation means, and the treatment unit can move at least one of two gripping members, each having a gripping face according to the opening/closing operation with the opening/closing operation means, and so can be opened or closed, and the treatment unit can change the angle in the protruding direction according to the angle-variable operation with the angle-variable operating unit and wherein the first and third shaft means are each in a pipe shape, and the second shaft means is in a rod shape, wherein the second shaft means is inserted within the first shaft means, and the first shaft means is inserted within the third shaft means. 
 
     
     
       7. The surgical instrument of  claim 6 , wherein the first shaft means only transmits a turning force, the second shaft means only transmits an opening/closing force and the third shaft means only transmits an angle-variable force. 
     
     
       8. A surgical instrument comprising:
 an insertion unit; 
 an operating unit provided on one end of the insertion unit; 
 a treatment unit provided so as to protrude from the other end of the insertion unit; 
 first shaft means for transmitting turning force to the treatment unit in conjunction with the turning operation of a turning operation means provided on the operating unit; 
 second shaft means for transmitting opening/closing force to the treatment unit in conjunction with the opening/closing operation of opening/closing means provided on the operating unit; and 
 third shaft means for transmitting angle-variable force which changes the angle in the protruding direction of the treatment unit as to the axis of the insertion unit in conjunction with an angle-variable operation of a angle-variable operating means provided on the operating unit; 
 wherein the first shaft means the second shaft means and the third shaft means are positioned on approximately the same axis, the first shaft means, second shaft means and third shaft means extend from a distal end of the insertion unit to the operating unit; 
 wherein the treatment unit can turn about the axis in the protruding direction according to the turning operation with the turning operation means, and the treatment unit can move at least one of two gripping members, each having a gripping face according to the opening/closing operation with the opening/closing operation means, and so can be opened or closed, and the treatment unit can change the angle in the protruding direction according to the angle-variable operation with the angle-variable operating unit, and 
 wherein the treatment unit further comprises two gripping members and biasing means which biases at least one of the two gripping members in the direction which is constantly in contact with the other gripping member, and the one gripping member resists the biasing force of the biasing means by the opening operation of the opening/closing operation, and thus moves in the direction which separates it from the other gripping member. 
 
     
     
       9. The surgical instrument according to  claim 8 , wherein the first and third shaft means are each in a pipe shape, and the second shaft means is in a rod shape, wherein the second shaft means is inserted within the first shaft means, and the first shaft means is inserted within the third shaft means. 
     
     
       10. The surgical instrument according to  claim 9 , wherein the insertion unit has fourth shaft means in a pipe shape, and the third shaft means is inserted within the fourth shaft means. 
     
     
       11. A surgical instrument comprising:
 an insertion unit;
 an operating unit provided on one end of the insertion unit; 
 a treatment unit provided so as to protrude from the other end of the insertion unit; 
 first operation means provided on the operating unit for turning the treatment unit about an axis in the protruding direction according to the turning operation; 
 second operation means provided on the operating unit to open or close the treatment unit by moving at least one of two gripping members thereof in response to an opening/closing operation; 
 third operation means provided on the operating unit for changing the angle in the protruding direction of the treatment unit as to the axis of the insertion unit in response to an angle-variable operation; 
 first shaft means in a pipe shape for transmitting a first force to turn the treatment unit in conjunction with the turning operation input from the first operation means; 
 second shaft means inserted within the first shaft means for transmitting a second force to open or close the treatment unit in conjunction with the opening/closing operation input from the second operation means; and 
 third shaft means in a pipe shape which is provided in the insertion unit and within which the first shaft means is inserted, for transmitting a third force to change the angle in conjunction with an angle-variable operation input from the third operation means, wherein the first shaft means, second shaft means and third shaft means extend from a distal end of the insertion unit to the operating unit. 
 
 
     
     
       12. The surgical instrument of  claim 11 , wherein the first shaft means only transmits a turning force, the second shaft means only transmits an opening/closing force and the third shaft means only transmits an angle-variable force.